Tor Support

[phelix]

continued from: https://github.com/namecoin/nmcontrol/pull/58#issuecomment-122465893

@JeremyRand There is a current version of Socksipy/Pysocks that looks more stable and maintained: https://github.com/Anorov/PySocks Also it can be used without monkey patching. What do you think? In any case I suggest we create a separate module to handle all outside connections (replacing urllib2) to keep things lean and mean.

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